Android:What is difference between setFlags and addFlags for intent

Question

What is difference between setFlags and addFlags for intent. Could any one explain it please. Help Appreciated.

Answer 1

When you use setFlags you are replacing the old flags... when you use addFlags you are appending new flags. Remember, a flag is just a integer which is power of two... in binary, flags look like this: 1, 10, 100, 1000, etc... (which in this case are 1, 2, 4, 8). So, what addFlags does is appending the integer you pass using the | operator.

// example...  // value of flags: 1 intent.setFlags(2|4);  // now flags have this value: 110 intent.addFlags(8);  // now flags have this value: 1110 

Answer 2

intent.setFlags(int num); 

This set flag controls how to handle the Intent.setflag mainly depends on type of component being executed by the Intent.It returns the same intent object for chaining multiple calls into a single statement.

intent.addFlags(int num); 

This helps to add additional flags to a particular intent with the existing values.this also returns the same intent object for chaining multiple calls into a single statement.